<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    let json={name: 'blue', age: 18};

    //alert('我叫：'+json.name+'，我今年'+json.age+'岁');
    alert(`我叫：${json.name}，我今年${json.age}岁`);
    </script>
  </head>
  <body>

  </body>
</html>
